Tehranian, Majid, author
Ablex, 1990
Buku Teks
edited by Christopher G. Reddick, Stephen K. Aikins
Springer, 2012
eBooks
Paris : The United Nations Educational
Majalah, Jurnal, Buletin
Slemon, Gordon R., author
Addison-Wesley, 1980
Buku Teks
Mychael, Arthur, author
McGraw-Hill Kogakusha, 1977
Buku Teks